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    • 3. 发明授权
    • Process for forming cured gradient coating film and multi-layered coating film containing the same
    • 用于形成固化的梯度涂膜和含有它的多层涂膜的方法
    • US07364645B2
    • 2008-04-29
    • US10702436
    • 2003-11-07
    • Hisaichi MuramotoKoji Izumiya
    • Hisaichi MuramotoKoji Izumiya
    • C25D13/06
    • B05D7/542B05D1/007B05D1/34B05D3/0209B05D7/587C09D5/4473
    • The present invention provides an improved two-layer coating system. The present invention relates to a process for forming a cured gradient coating film, comprising the steps of: applying an aqueous electrodeposition coating composition comprising at least two resins and a curing agent, on an electrically conductive substrate, heating a electrodeposition coating film to form a layer separation, and then, curing the electrodeposition coating film to form a cured gradient coating film; wherein the resins include one resin component constituting a resin layer (a) in direct contact with air before applying top coating and other resin component constituting a resin layer (b) in direct contact with the electrically conductive substrate, and, wherein a solubility parameter (δa) of a resin component A and a solubility parameter (δb) of a resin component B have a specific relationship.
    • 本发明提供一种改进的双层涂布体系。 本发明涉及形成固化的梯度涂膜的方法,包括以下步骤:将包含至少两种树脂和固化剂的水性电沉积涂料组合物涂覆在导电基材上,加热电沉积涂膜以形成 层分离,然后固化电沉积涂膜以形成固化的梯度涂膜; 其中所述树脂包括构成与空气直接接触的树脂层(a)的一种树脂成分,以及构成与所述导电基材直接接触的树脂层(b)的其它树脂成分,并且其中溶解度参数( 树脂成分A的溶解度参数(deltab)和树脂成分B的溶解度参数(deltab)具有特定关系。